---
url: "https://onebag.travel/compare/97t3pto626/thule-aion-28l/zaj208cenq/thule-aion-40l/"
title: "Thule Aion 28L vs Thule Aion 40L - One Bag Travel"
description: "Thule Aion 28L vs Thule Aion 40L: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/97t3pto626/thule-aion-28l/zaj208cenq/thule-aion-40l/"
---
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3.  Thule Aion 28L vs. Thule Aion 40L

# Thule Aion 28L vs. Thule Aion 40L

Two carry-on travel backpacks, compared spec for spec.

## [Thule Aion 28L](https://onebag.travel/carryon/97t3pto626/thule-aion-28l/)

by [Thule](https://onebag.travel/carryons/?brands=Thule)

![Front facing view of the Thule Aion 28L](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1788990441/carryons/thule-aion-28l-97t3pto626.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>28 L</td></tr><tr><td>Weight</td><td>1.2 kg</td></tr><tr><td>Dimensions</td><td>47×28×23 cm</td></tr><tr><td>Airline fit</td><td>74%</td></tr><tr><td>Price</td><td>$190</td></tr></tbody></table>

## Feature by feature

| Thule Aion 28L | Feature | Thule Aion 40L |
| --- | --- | --- |
| Storage |
| N | Compression | N |
| 32L | Expanded Capacity | None |
| 1 | Opening | 1 |
| top | Passport | top |
| Y | Passthrough | Y |
| Carry |
| Y | Backpack | Y |
| optional | Hip Belt | optional |
| Y | Sternum Strap | Y |
| Inside |
| 16in | Laptop | 16in |
| 4 | Main Compartments | 4 |
| Y | Organizer | Y |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1, side | Water Bottle Holder | 1, side |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>Waxed P600 polyester canvas</td><td></td></tr></tbody></table>

## [Thule Aion 40L](https://onebag.travel/carryon/zaj208cenq/thule-aion-40l/)

by [Thule](https://onebag.travel/carryons/?brands=Thule)

![Front facing view of the Thule Aion 40L](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1788990324/carryons/thule-aion-40l-zaj208cenq.avif)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>40 L</td></tr><tr><td>Weight</td><td>1.5 kg</td></tr><tr><td>Dimensions</td><td>52×33×23 cm</td></tr><tr><td>Airline fit</td><td>70%</td></tr><tr><td>Price</td><td>$200</td></tr></tbody></table>

## Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 132 accept both. 7 accept only the Thule Aion 28L, and 0 accept only the Thule Aion 40L.

### Only the Thule Aion 28L fits

Etihad Airways, Great Lakes Airlines, Oman Air, Qatar Airways, Regional Express, Royal Jordanian, Virgin Australia.

## Thule Aion 28L vs. Thule Aion 40L: which should you pack?

The **Thule Aion 40L** carries 12L more than the **Thule Aion 28L** (28L vs. 40L), while the **Thule Aion 28L** is the lighter pack at 1.2kg (vs. 1.5kg). For carry-on flexibility, the **Thule Aion 28L** fits 74% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Thule Aion 40L; if you want to travel lighter, the Thule Aion 28L is the better call.